Solitary polypoidal lesions which are premalignant in the large intestine.
D001706:Biopsy; D003082:Colectomy; D003110:Colonic Neoplasms / Q000175:diagnosis; D006801:Humans; D007417:Intestinal Polyps / Q000473:pathology / Q000601:surgery*; D008722:Methods; D011230:Precancerous Conditions; D012004:Rectal Neoplasms / Q000601:surgery*; D012812:Sigmoidoscopy